The horizontal acceleration of a projectile
A)is zero.
B)stays constant.
C)continuously increases.
D)continuously decreases.
E)sometimes decreases and sometimes increases.

Question

Quizplus · Accepted Answer

The horizontal acceleration of a projectile is always zero due to the absence of external forces acting on the projectile in the horizontal direction. Once the projectile is launched, the only force acting on it is gravity which only affects its vertical motion. Therefore, the horizontal velocity of the projectile remains constant unless affected by external forces such as air resistance or wind.

The Horizontal Acceleration of a Projectile